KBU8D Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBU8D is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, designed for standard rectification applications requiring 200 V peak reverse voltage and 8 A average rectified current. The device features through-hole mounting in a 4-SIP KBU package and operates across an industrial temperature range of -55°C to 150°C. This part maintains Active product status with RoHS compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits selection from qualified alternatives meeting the same electrical and mechanical specifications.

Substiute Parts

KBU8D

GeneSiC SemiconductorIn Stock: 2056KBU8D Datasheet

Current PartRFQ

GBU602-G

Comchip TechnologyIn Stock: 862GBU602-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KBU8D is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Peak Reverse (Max): Must equal 200 V
• Diode Type: Must be Single Phase
• Technology: Must be Standard
• Mounting Type: Must be Through Hole
• Operating Temperature Range: Must encompass -55°C to 150°C

Secondary Compatibility Factors:

• Current - Average Rectified (Io): Substitute must meet or exceed 8 A
• Package / Case: Must be compatible 4-SIP form factor (KBU or equivalent GBU series)
• RoHS Status: Must maintain compliance certification

The GBU602-G qualifies as a substitute based on matching voltage rating (200 V), diode type (Single Phase), technology (Standard), mounting method (Through Hole), and operating temperature range (-55°C to 150°C). However, the current rating differs at 6 A versus the KBU8D's 8 A specification.

Parameter Comparison

Engineering Selection Recommendations

KBU8D Selection Criteria: The KBU8D is the primary component choice when applications require the full 8 A average rectified current specification. GeneSiC Semiconductor maintains Active product status with established supply inventory (2000 Pcs in stock). RoHS compliance and unlimited moisture sensitivity rating support deployment in standard industrial environments.

GBU602-G Selection Criteria: The GBU602-G from Comchip Technology qualifies as a substitute when circuit design permits operation at reduced current levels (6 A maximum). This part maintains identical voltage ratings, temperature range, and mounting configuration. ROHS3 compliance and lower reverse leakage current (5 µA versus 10 µA) provide additional design flexibility. Current inventory of 820 Pcs supports availability for substitute applications.

Compliance Alignment: Both parts maintain RoHS compliance and EAR99 export classification. REACH status for GBU602-G is listed as Unaffected, indicating no additional regulatory constraints for European applications.

Frequently Asked Questions (FAQ)

Q: Can GBU602-G directly replace KBU8D in all applications?

A: Direct replacement is limited by current rating. GBU602-G is rated for 6 A average rectified current, while KBU8D is rated for 8 A. Substitution is valid only when circuit design operates at or below 6 A continuous current.

Q: Are the KBU and GBU package formats mechanically interchangeable?

A: Both parts use 4-SIP through-hole mounting. Physical pin spacing and PCB footprint compatibility must be verified against specific package drawings, as KBU and GBU designations indicate different manufacturer series.

Q: What is the significance of the voltage forward (Vf) difference between parts?

A: KBU8D specifies Vf at 8 A (1 V @ 8 A), while GBU602-G specifies Vf at 3 A (1 V @ 3 A). This reflects the different current ratings of each device. Forward voltage characteristics are not directly comparable across different current levels.

Q: Do both parts support the same operating temperature range?

A: Yes. Both KBU8D and GBU602-G operate from -55°C to 150°C junction temperature, supporting identical thermal specifications for industrial applications.

Q: What does the reverse leakage current difference indicate?

A: GBU602-G exhibits lower reverse leakage (5 µA @ 200 V) compared to KBU8D (10 µA @ 200 V). Lower leakage current can reduce standby power consumption in certain circuit topologies.

Q: Are there inventory considerations for component selection?

A: KBU8D maintains higher stock levels (2000 Pcs) versus GBU602-G (820 Pcs). For high-volume production, KBU8D availability provides supply chain advantages.